JPS56112113A - Channel selection device - Google Patents

Channel selection device

Info

Publication number
JPS56112113A
JPS56112113A JP1495080A JP1495080A JPS56112113A JP S56112113 A JPS56112113 A JP S56112113A JP 1495080 A JP1495080 A JP 1495080A JP 1495080 A JP1495080 A JP 1495080A JP S56112113 A JPS56112113 A JP S56112113A
Authority
JP
Japan
Prior art keywords
voltage
reference voltage
channel selection
tuning
selection device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP1495080A
Other languages
Japanese (ja)
Other versions
JPH0145247B2 (en
Inventor
Isao Fujimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP1495080A priority Critical patent/JPS56112113A/en
Priority to CA000366201A priority patent/CA1171563A/en
Priority to US06/214,872 priority patent/US4365348A/en
Priority to DE19803046718 priority patent/DE3046718A1/en
Priority to GB8040213A priority patent/GB2066007B/en
Publication of JPS56112113A publication Critical patent/JPS56112113A/en
Publication of JPH0145247B2 publication Critical patent/JPH0145247B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H03J5/242—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection
    • H03J5/244—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection using electronic means

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To make it possible to control the upper limit of the tuning voltage and restrict the receiving frequency band, by switching 2 kinds of reference voltage by means of linkage with the band switching operation. CONSTITUTION:The channel selection part 5 raises the voltage by the voltage converter 52, after pulse width modulation of the channel signal in the bit rate multiplier 51. The reference voltage generation part 7 generates the first reference voltage VS1 and the second reference voltage VS2 which have been stabilized by the constant-voltage diode 71. When the pulse signal whose voltage has been converted is smoothed and changed to a direct current by the low-pass filter 53, it is possible to obtain the tuning voltage whose peak value has conformed with the first and second voltage (VS1, VS2).
JP1495080A 1979-06-04 1980-02-08 Channel selection device Granted JPS56112113A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP1495080A JPS56112113A (en) 1980-02-08 1980-02-08 Channel selection device
CA000366201A CA1171563A (en) 1979-12-17 1980-12-05 Tuning voltage generating apparatus of voltage synthesizer type
US06/214,872 US4365348A (en) 1979-12-17 1980-12-10 Tuning voltage generating apparatus of voltage synthesizer type
DE19803046718 DE3046718A1 (en) 1979-06-04 1980-12-11 Synthesiser type tuning voltage generator - uses pulse signal, having width corresponding to frequency, received by voltage converter and low pass filter
GB8040213A GB2066007B (en) 1979-12-17 1980-12-16 Tuning voltage generating apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1495080A JPS56112113A (en) 1980-02-08 1980-02-08 Channel selection device

Publications (2)

Publication Number Publication Date
JPS56112113A true JPS56112113A (en) 1981-09-04
JPH0145247B2 JPH0145247B2 (en) 1989-10-03

Family

ID=11875247

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1495080A Granted JPS56112113A (en) 1979-06-04 1980-02-08 Channel selection device

Country Status (1)

Country Link
JP (1) JPS56112113A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6971508B2 (en) 2001-03-15 2005-12-06 Kawasaki Jukogyo Kabushiki Kaisha Belt conveyor and auxiliary equipment thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6971508B2 (en) 2001-03-15 2005-12-06 Kawasaki Jukogyo Kabushiki Kaisha Belt conveyor and auxiliary equipment thereof
US7325673B2 (en) 2001-03-15 2008-02-05 Kawasaki Jukogyo Kabushiki Kaisha Belt conveyor and associated equipment

Also Published As

Publication number Publication date
JPH0145247B2 (en) 1989-10-03

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